#include<iostream>
using namespace std;
class USBDevice {
	long m_id;
public:
	USBDevice(long  id);
	long getID();
};
class NetworkDevice{
	long m_id;
public:
	NetworkDevice(long id);
	long getID();
};
class WirelessAdaptor : public USBDevice, public NetworkDevice
{
public:
	WirelessAdaptor(long uid, long nid)
		:USBDevice(uid), NetworkDevice(nid){
	}
};

